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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. #include "config.h"
  20.  
  21. #include "libavutil/mem.h"
  22.  
  23. #include "vda.h"
  24. #include "vda_vt_internal.h"
  25.  
  26. #if CONFIG_H264_VDA_HWACCEL
  27. AVVDAContext *av_vda_alloc_context(void)
  28. {
  29.     AVVDAContext *ret = av_mallocz(sizeof(*ret));
  30.  
  31.     if (ret) {
  32.         ret->output_callback = ff_vda_output_callback;
  33.         ret->cv_pix_fmt_type = kCVPixelFormatType_422YpCbCr8;
  34.     }
  35.  
  36.     return ret;
  37. }
  38.  
  39. int av_vda_default_init(AVCodecContext *avctx)
  40. {
  41.     return av_vda_default_init2(avctx, NULL);
  42. }
  43.  
  44. int av_vda_default_init2(AVCodecContext *avctx, AVVDAContext *vdactx)
  45. {
  46.     avctx->hwaccel_context = vdactx ?: av_vda_alloc_context();
  47.     if (!avctx->hwaccel_context)
  48.         return AVERROR(ENOMEM);
  49.     return ff_vda_default_init(avctx);
  50. }
  51.  
  52. void av_vda_default_free(AVCodecContext *avctx)
  53. {
  54.     ff_vda_default_free(avctx);
  55.     av_freep(&avctx->hwaccel_context);
  56. }
  57.  
  58. void ff_vda_default_free(AVCodecContext *avctx)
  59. {
  60.     AVVDAContext *vda = avctx->hwaccel_context;
  61.     if (vda && vda->decoder)
  62.         VDADecoderDestroy(vda->decoder);
  63. }
  64.  
  65. #else
  66. AVVDAContext *av_vda_alloc_context(void)
  67. {
  68.     return NULL;
  69. }
  70.  
  71. int av_vda_default_init(AVCodecContext *avctx)
  72. {
  73.     return AVERROR(ENOSYS);
  74. }
  75.  
  76. void av_vda_default_free(AVCodecContext *ctx)
  77. {
  78. }
  79. #endif
  80.